Base | Representation |
---|---|
bin | 1000100101110… |
… | …00110001110010 |
3 | 12000121000202120 |
4 | 10102320301302 |
5 | 121421410033 |
6 | 11052255110 |
7 | 1533333342 |
oct | 422706162 |
9 | 160530676 |
10 | 72060018 |
11 | 37748838 |
12 | 20171496 |
13 | 11c10384 |
14 | 97dad22 |
15 | 64d61b3 |
hex | 44b8c72 |
72060018 has 16 divisors (see below), whose sum is σ = 145006176. Its totient is φ = 23872320.
The previous prime is 72060013. The next prime is 72060029. The reversal of 72060018 is 81006027.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 72060018.
It is not an unprimeable number, because it can be changed into a prime (72060011) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35863 + ... + 37818.
It is an arithmetic number, because the mean of its divisors is an integer number (9062886).
Almost surely, 272060018 is an apocalyptic number.
72060018 is an abundant number, since it is smaller than the sum of its proper divisors (72946158).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
72060018 is a wasteful number, since it uses less digits than its factorization.
72060018 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 73849.
The product of its (nonzero) digits is 672, while the sum is 24.
The square root of 72060018 is about 8488.8172321001. The cubic root of 72060018 is about 416.1323273864.
The spelling of 72060018 in words is "seventy-two million, sixty thousand, eighteen".
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